Yeah, think I’ll go with the tials, although, I do plan a basic engine build in the near future. Does it require a full engine build to do the rods in these engines?

 

No rods alone with head studs will make the motor very stout.

 

What would you estimate labour hours on that job?

 

Now, to stir up questions again. Someone has just pointed out the gen 2 Garrett GTX3576R. From what I’m reading it spoils as fast as gtx3076r but flows up top better and in future can be upgraded to 3582 if necessary quite easily. Hmmm, anyone tried one?

 

the 3576 used the gt35 turbine and the 3076 compressor. It will spool slower. On a motor our size and limited rpm range, you will gain nothing from doing this until running 4 digit hp. The gt30 turbine flows more than enough.

 

Ok, what are your thoughts on these gen2 gtx3076r vs maybe tial 3076? They seem to be highly rated but is that just on higher revving engines Again? Also, do you know how many hours labour it should be to upgrade rods? Thanks

 

well there are a few generation of tial 3076 so that's hard to say. The new gen 3076 is probably going to have the best aero. The new xona 3076 are probably within 1% of the gen 2 3076. You would have the added cost of custom headers, external gates, and custom exhaust running the gen 3076 over the tials though.

as for doing rods and studs and the hours of labor, you need to be more specific. Are you just dropping the car off somewhere and having them pull the motor, build it, and put it back in? You going to pull the motor and send it complete somewhere? Are you going to pull the motor and strip it down to just a long block and send It? Have to know more before giving you time to do the work.

 

For rods I would need to drop off the whole car. I’ve been told it’s 6-8 just to remove and replace the engine?

Turbos. I’m planning on customer headers and another new Exhaust as I think I would need it on this size of turbo so probably go with the gtx then and also, the sound of external wastegates

 

With the engine build, I am trying to decide if I should go with a full built bore and stroke 4.0 litre or just rods and studs? If labour on rods is almost as much as full engine build then I may consider going the whole hog but if it’s not to bad I’d be happy to just address the weak points then wind up the turbos. Thanks for your help

 

Well if your just dropping a car off at a shop, your looking at about 60 hours for engine removal, rods and studs install and then engine install.
if your going to do that's, you'll want to build the whole car at 1 time. That includes fuel system, turbos, probably a stand alone, trans build, axles, etc.
for building a larger motor, I would only go to a 3.8. Larger than that they have had issues with liners cracking because they are too thin at super high hp

for the tial 3076, you would be fine running stock manifold that are ported.

Just a suggestion here, you need to truly determine your end goal and not try to reinvent the wheel to get there.

 

Ok, thanks for your help. I’m just trying to gather information to help me determine which route to take. My mind goal was circa 1000 bhp at the crank but I think that will certainly require new rods. Wanted to do it in stages if that’s possible.

 

ok 1000 crank is only.about 850whp. 3076 can do that easy and tons of room left on then. 3586 is way overkill for that kind of power. All you'll have is a smaller power band doing so.
you can build in stages to a point. With your current setup, you'll limit out the fuel system you have with 3076. You will make more power though and can stay there until you decide to rebuild the motor. 750whp and 650wlb is really the max limit of the stock motor. You have to tune carefully to run that as well.
a simple turbo upgrade, filters on turbos, and a new tune will get you nice gains until you want to do the motor.

 

If you look at it purely turbo wise, the newest version of the xona 3076 or garret gen 2 3076 as a pair of cable of making up to 1200whp on a built motor with head work.

 

Sounds great. So, fuelling. I have everything stock except 60lb injectors. So, to get around 750whp I’m sure I’ll need more. What would you suggest so as not to have to upgrade injectors again when building the motor? Thanks

 

well it's almost impossible to do injectors without pulling the motor. It's possible but easier to pull the motor to do so. That's why I keep going back to doing it all at one time as you're paying someone else to do the work. Yes your 60lb injector will not make 750whp, not even close.

injector and fuel system will depend on what fuel you plan on running. If use e85 it will require a much larger fuel system. I think you said before though that you don't have that easily available. In pump gas and race gas you can use much smaller injectors and pump.